Elle, Kate, and More Step Out With InStyle to Celebrate Alexa Chung For Madewell

Elle, Kate, and More Step Out With InStyle to Celebrate Alexa Chung For Madewell

Today, Alexa Chung for Madewell's coveted Fall '11 collection finally hits stores and the Internet, but last night a few very styled — and Madewell-clad — celebs flocked to the Chateau Marmont to join InStyle and Alexa Chung in celebrating the launch of her new Madewell goodies. Among the guests, we spotted Elle Fanning in the super-sweet lace dress we've been eying from the collection; Kate Bosworth stepping out in a cool, printed sheath; and Alexa, of course, rocking a few of her favorite pieces from the new line. Click through to get a glimpse of all the celebs — and consider this your reminder to head to shop the collection today. Then, be sure to tell us your pick for best dressed party guest in the comments.